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Colored polyester staple fiber with skin-core structure and preparation method thereof

A technology of colored polyester and skin-core structure, which is applied in the fields of fiber chemical characteristics, rayon manufacturing, and conjugated synthetic polymer rayon. Time cost and other issues, to achieve uniform color, solve the effect of different shades of color, reduce pollution

Inactive Publication Date: 2018-12-11
HANGZHOU BENMA CHEMFIBER & SPINNING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the dyeing process needs to go through many times to establish the adsorption-desorption balance, destroy the adsorption-desorption balance and each fiber may appear uneven in thickness, the time for the dye to diffuse into each fiber is inconsistent, in order to improve the color polyester staple fiber The uniformity of the surface color has to prolong the soaking time of the fiber, which not only increases the time cost of dyeing, but also may cause the surface color of the colored polyester staple fiber to be different in depth due to inaccurate time control, and at the same time, a large amount of dyeing is produced during the dyeing process. waste water, polluting the environment

Method used

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  • Colored polyester staple fiber with skin-core structure and preparation method thereof
  • Colored polyester staple fiber with skin-core structure and preparation method thereof
  • Colored polyester staple fiber with skin-core structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) APET and color masterbatches of the weight formula are taken, and mixed uniformly in a mixer to obtain a cortical mixture;

[0042] (2) Put APET into the compound spinning box after passing through the metering pump; at the same time, pass the uniformly mixed cortex mixture into the compound spinning box through the metering pump, and then pass through the skin-core composite spinning assembly, and spin at a temperature of 240°C Silk, and after cooling, oiling, drawing, deep drawing, and shaping, colored polyester fibers are obtained;

[0043] (3) Finally, the colored polyester fiber is cut into staple fibers of required specifications to obtain colored polyester staple fibers with a sheath-core structure.

[0044] Among them, the color masterbatch is prepared by the following method: Weigh each component of the weight formula, put polypropylene resin, polyethylene wax, fatty alcohol polyoxyethylene ether in a high-speed mixer and stir for 10 minutes, and then add b...

Embodiment 2-7

[0046] The difference between Examples 2-7 and Example 1 is that the ratio of raw materials for preparing the colored polyester staple fiber with a sheath-core structure is different, as shown in Table 1 and Table 2.

Embodiment 8

[0048] The difference between embodiment 8 and embodiment 6 is that the process conditions and some raw materials for preparing the colored polyester staple fiber of sheath-core structure are different;

[0049] (1) RPET and color masterbatches of the weight formula are taken, and mixed uniformly in a mixer to obtain a cortical mixture;

[0050] (2) Put PETG through the metering pump and then enter the composite spinning box; at the same time, pass the uniformly mixed cortex mixture into the composite spinning box through the metering pump, and then pass through the skin-core composite spinning assembly, and spin at a temperature of 260°C Silk, and after cooling, oiling, drawing, deep drawing, and shaping, colored polyester fibers are obtained;

[0051] (3) Finally, the colored polyester fiber is cut into staple fibers of required specifications to obtain colored polyester staple fibers with a sheath-core structure.

[0052] Among them, the color masterbatch is prepared by th...

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PUM

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Abstract

The invention relates to a colored polyester staple fiber with a skin-core structure and a preparation method thereof, belongs to the technical field of colored polyester staple fibers, and solves thetechnical problem that the surface color of the colored polyester staple fiber has different shades, and reduces the pollution to the environment. The colored polyester staple fiber comprises 50 to 80 wt% of a core layer and 10 to 20 wt% of a skin layer, wherein the skin layer coats the outer peripheral surface of the core layer, the core layer comprises an uncolored core layer fiber, the skin layer comprises an uncolored skin layer fiber, and masterbatch for coloring the skin layer fiber, and the weight of the masterbatch is 10 to 20 wt% of the total weight of the skin layer. The colored polyester staple fiber of the skin-core structure disclosed by the invention realizes the dope-dyeing of the colored polyester staple fiber by adding the masterbatch in the skin layer, makes the surfacecolor of the color polyester staple fiber more uniform and brighter, and further reduces the use amount of the masterbatch and production cost.

Description

technical field [0001] The invention relates to the technical field of colored polyester staple fibers, in particular to a colored polyester staple fiber with a sheath-core structure and a preparation method thereof. Background technique [0002] The scientific name of polyester is polyethylene terephthalate fiber, referred to as polyester fiber, which is made of terephthalic acid and ethylene glycol through esterification and polycondensation reaction to make polyester, and then prepared by spinning Therefore, polyester staple fibers can be obtained after cutting polyester. Due to its good strength, wrinkle resistance, abrasion resistance and thermal stability, polyester staple fiber has been rapidly developed and widely used in clothing, home textiles, decoration and other fields. [0003] Common polyester staple fibers in the prior art are mostly uncolored primary white fibers. When obtaining colored polyester staple fibers, it is necessary to dye the primary white fiber...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F1/10
CPCD01F1/10D01F8/14
Inventor 许国良
Owner HANGZHOU BENMA CHEMFIBER & SPINNING
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